Story · GitHub Blog (AI & ML)
Migrating the GitHub Copilot runtime to Rust, using Copilot (GitHub Blog (AI & ML))
blog post · Story page
GitHub used Copilot to port the Copilot agent runtime to 800,000 lines of production Rust, and says a rewrite this size wasn't affordable before agents.
In plain words
- GitHub used its coding assistant Copilot to help rewrite the software that runs Copilot.
- The new version uses 800,000 lines of code written in Rust, a programming language.
- The author says using automated coding assistants made this large rewrite affordable for GitHub.
Appeared in
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Sep 18, 2026 · in the sections
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